button {
    width: 35px;
}
input {
    font-size: 20px;
    text-align: right;
}
.number_but {
    background-color: rgb(109, 109, 240);
}
.delete_but {
    background-color: rgb(237, 131, 131); 
}
.memory_color {
    background-color: lightgreen;
}
.memory_on {
    color: black;
    background-color: white;
}
.memory_off {
    color: white;
    background-color: white;
}
.zarojel_on {
    color: rgba(62, 173, 108, 0.471);
    background-color: white;
}
.zarojel_off {
    color: white;
    background-color: white;
}
.error_on {
    color: rgb(255, 0, 0);
    background-color: white;
}
.error_off {
    color: white;
    background-color: white;
}